Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2013 4 17.  Predictions up to the next  30.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 04/19/2013   16:00:23   (  22.60, 147.36) 04/19/2013   16:01:15    (  23.26, 144.42)  309.67             52
 04/27/2013   15:11:08   (  21.69, 159.53) 04/27/2013   15:10:52    (  22.22, 156.85)  282.97             16
 05/05/2013   16:00:12   (  22.61, 147.43) 05/05/2013   16:01:23    (  23.27, 144.42)  316.39             71
 05/13/2013   15:10:36   (  22.58, 159.84) 05/13/2013   15:10:44    (  23.17, 157.09)  289.40              8